What role does boron play in the flowering and fruit setting of jujube trees?

Boron is present in large amounts in the stigma of jujube flowers. It can promote the absorption of sugars by pollen, activate metabolic processes, and stimulate pollen germination and pollen tube growth. The method of application is: spraying 0.2 to 0.3% borax during the flowering period, which is beneficial for fruit setting, especially in red soil areas prone to boron deficiency, where the effect is even more pronounced.